Spam Activity in Hosting Networks (ASNs)
Quarter over Quarter Comparison:
March 1,2025 - May 31,2025
To see where spammed content or spambots were being hosted, we collected the IP addresses that spam domains were resolving to when spam activity was detected and added to a threat or block list. We then identified the ASN where the IP prefix containing the IP address was allocated. This number identifies the hosting network where spammed content or a spambot was reported.
In the table below, we compare the ranking of Hosting Networks (ASNs) for the December 1, 2024 - February 28, 2025 period to the ranking for the March 1,2025 - May 31,2025 period.
Ranking of Hosting Networks (ASNs) by Hosted Spammed Content or Spambots, Quarter over Quarter (March to May 2025)
| IPv4 Addresses Assigned | # of Spammed Content or Spambot Hosts |
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| Rank | Hosting Provider | ASN | December to February 2025 | March to May 2025 | December to February 2025 | March to May 2025 ▼ | |||
| 1 | N/R** | Trellian Pty. Limited | 133618 | 1,024 | 1,024 | (0%) | 75,982 | 516,182 | (+579%) |
| 2 | — | Cloudflare, Inc. | 13335 | 2,611,712 | 2,735,360 | (+5%) | 337,708 | 317,004 | (-6%) |
| 3 | — | CTG Server Limited | 152194 | 1,007,104 | 1,006,336 | (-0%) | 259,690 | 186,043 | (-28%) |
| 4 | ▲ +1* | Dimension Network & Communication Limited | 59371 | 79,104 | 79,104 | (0%) | 135,747 | 180,870 | (+33%) |
| 5 | ▼ -4 | Amazon.com, Inc. | 16509 | 208,388,864 | 214,946,048 | (+3%) | 841,925 | 164,906 | (-80%) |
| 6 | ▼ -2 | Google LLC | 15169 | 12,043,264 | 2,501,632 | (-79%) | 165,258 | 134,915 | (-18%) |
| 7 | ▼ -1 | Alibaba (US) Technology Co., Ltd. | 45102 | 6,104,320 | 6,688,000 | (+10%) | 134,834 | 110,598 | (-18%) |
| 8 | — | Microsoft Corporation | 8075 | 66,624,256 | 66,537,984 | (-0%) | 99,880 | 93,291 | (-7%) |
| 9 | ▼ -2 | CNSERVERS LLC | 40065 | 1,322,241 | 1,301,248 | (-2%) | 103,769 | 83,179 | (-20%) |
| 10 | ▲ +3 | HENGDA NETWORK LIMITED | 138415 | 275,456 | 310,528 | (+13%) | 51,233 | 81,238 | (+59%) |
| 11 | ▼ -1 | Clayer Limited | 137951 | 907,520 | 420,352 | (-54%) | 76,361 | 77,814 | (+2%) |
| 12 | ▲ +7 | POWER LINE (HK) CO., LIMITED | 132839 | 984,064 | 770,304 | (-22%) | 38,526 | 63,423 | (+65%) |
| 13 | ▼ -1 | OVH SAS | 16276 | 4,480,000 | 4,521,984 | (+1%) | 60,189 | 61,598 | (+2%) |
| 14 | ▲ +3 | Netsec Limited | 45753 | 200,448 | 121,600 | (-39%) | 41,051 | 56,620 | (+38%) |
| 15 | — | Shenzhen Tencent Computer Systems Company Limited | 132203 | 2,747,392 | 2,707,200 | (-1%) | 43,329 | 55,582 | (+28%) |
| 16 | ▲ +4 | Cloudie Limited | 55933 | 289,792 | 428,288 | (+48%) | 34,381 | 55,161 | (+60%) |
| 17 | ▼ -1 | PEG TECH INC | 54600 | 1,054,464 | 1,256,192 | (+19%) | 42,568 | 39,820 | (-6%) |
| 18 | ▼ -4 | Google LLC | 396982 | 38,942,976 | 48,680,448 | (+25%) | 49,227 | 34,358 | (-30%) |
| 19 | ▲ +15 | Tcloudnet | 399077 | 144,256 | 141,952 | (-2%) | 10,264 | 34,224 | (+233%) |
| 20 | ▲ +5 | DingFeng XinHui(HongKong) Technology Limited | 134548 | 1,308,672 | 1,246,720 | (-5%) | 17,409 | 31,229 | (+79%) |
* Indicates change over prior quarter
** Indicates not ranked in prior quarter; either number of addresses or number of spam attacks did not meet minimum threshold for ranking
Ranking of Hosting Networks (ASNs) by Spam Score, Quarter over Quarter (March to May 2025)
Hosting Providers with a minimum of 50,000 addresses assigned to the ASN and 25 spam attacks
| IPv4 Addresses Assigned | Spam Score | ||||||||
| Rank | Hosting Provider | ASN | December to February 2025 | March to May 2025 | December to February 2025 | March to May 2025 ▼ | |||
| 1 | — | Dimension Network & Communication Limited | 59371 | 79,104 | 79,104 | (0%) | 17,160.6 | 22,864.8 | (+33%) |
| 2 | ▲ +5* | Netsec Limited | 45753 | 200,448 | 121,600 | (-39%) | 2,048.0 | 4,656.3 | (+127%) |
| 3 | ▲ +1 | SonderCloud Limited | 133199 | 68,096 | 67,584 | (-1%) | 3,020.3 | 3,697.2 | (+22%) |
| 4 | ▲ +4 | HENGDA NETWORK LIMITED | 138415 | 275,456 | 310,528 | (+13%) | 1,859.9 | 2,616.1 | (+41%) |
| 5 | ▲ +19 | Tcloudnet | 399077 | 144,256 | 141,952 | (-2%) | 711.5 | 2,411.0 | (+239%) |
| 6 | ▼ -4 | Cloudflare London, LLC | 209242 | 129,536 | 129,792 | (0%) | 7,283.3 | 2,381.0 | (-67%) |
| 7 | ▲ +6 | Hong Kong Communications International Co., Limited | 140227 | 57,344 | 64,768 | (+13%) | 1,199.8 | 2,302.8 | (+92%) |
| 8 | ▲ +12 | Clayer Limited | 137951 | 907,520 | 420,352 | (-54%) | 841.4 | 1,851.2 | (+120%) |
| 9 | ▼ -3 | CTG Server Limited | 152194 | 1,007,104 | 1,006,336 | (-0%) | 2,578.6 | 1,848.7 | (-28%) |
| 10 | — | Antbox Networks Limited | 138995 | 57,856 | 73,472 | (+27%) | 1,771.5 | 1,778.0 | (+0%) |
| 11 | ▲ +1 | PEG TECH INC | 398478 | 133,888 | 156,928 | (+17%) | 1,257.8 | 1,613.5 | (+28%) |
| 12 | ▲ +5 | NetLab Global | 979 | 54,272 | 63,488 | (+17%) | 1,002.7 | 1,606.0 | (+60%) |
| 13 | ▼ -10 | NForce Entertainment B.V. | 43350 | 66,048 | 65,792 | (-0%) | 4,328.8 | 1,440.9 | (-67%) |
| 14 | N/R** | XNNET LLC | 932 | 10,752 | 78,848 | (+633%) | 1,254.7 | 1,317.3 | (+5%) |
| 15 | ▼ -1 | Cloudie Limited | 55933 | 289,792 | 428,288 | (+48%) | 1,186.4 | 1,287.9 | (+9%) |
| 16 | ▼ -5 | Cloudflare, Inc. | 13335 | 2,611,712 | 2,735,360 | (+5%) | 1,293.1 | 1,158.9 | (-10%) |
| 17 | N/R | GNET INC. | 9294 | 16,128 | 240,896 | (+1,394%) | 8,686.8 | 970.5 | (-89%) |
| 18 | ▲ +39 | PEG TECH INC | 398993 | 75,008 | 67,328 | (-10%) | 190.7 | 931.3 | (+388%) |
| 19 | ▲ +16 | POWER LINE (HK) CO., LIMITED | 132839 | 984,064 | 770,304 | (-22%) | 391.5 | 823.4 | (+110%) |
| 20 | ▲ +8 | Forewin Telecom Group Limited | 38186 | 68,608 | 60,160 | (-12%) | 506.7 | 752.8 | (+49%) |
* Indicates change over prior quarter
** Indicates not ranked in prior quarter; either number of addresses or number of spam attacks did not meet minimum threshold for ranking
| Quarterly Update: Hosting Networks |
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| Quarter over Quarter: Key Statistics |
Quarter over Quarter: Top Level Domains |
Quarter over Quarter: Registrars |
Quarter over Quarter: Hosting Networks |